MCNPX

Introduction

MCNPX , Monte Carlo N-Particle eXtended, is a general-purpose Monte Carlo radiation transport code for modeling the interaction of radiation with everything. It extends the capabilities of MCNP4C3 to nearly all particles, nearly all energies, and to nearly all applications without an additional computational time penalty.

Please note, MCNPX is installed on HPC Center's RedHat EL6 systems. Please read the section of "Execution Instructions..." below for information on how to access the software.

Version 2.7.0

The configuration and compilation flags used are:

configure --with-FC=ifort --with-CC=icc

Installation location:

/apps/mcnpx/2.7.0 

Using Modules

• What is a Module System:

Module system is a utility to manage application execution environment - compilers, runtime libraries, application executables. Your execution environment can be set by simply loading the appropriate modules. For more information, please refer to From_mpi-selector_to_environment_modules.

• To use MCNPX:

module load intel mcnpx

Single-Threaded Execution

Required Modules

module load intel
module load mcnpx

Sample Submission Script

#!/bin/bash
#PBS -N mcnpx
#PBS -r n
#PBS -o mcnpout
#PBS -e mcnperr
#PBS -j oe
#PBS -m abe
#PBS -M <your_email_address>
#PBS -l walltime=99:00:00
#PBS -l nodes=1:ppn=1
#PBS -l pmem=900mb
#PBS -q submit
#
module load intel
module load mcnpx
#
cd $PBS_O_WORKDIR
mcnpx i=m24-0-0B o=m24-0-0Bo

Parallel (MPI) Execution

Required Modules

module load intel
module load openmpi
module load mcnpx

Sample Submission Script

#!/bin/bash
#PBS -N mpitest
#PBS -r n
#PBS -o mcnpout
#PBS -e mcnperr
#PBS -j oe
#PBS -m abe
#PBS -M <your_email_address>
#PBS -l walltime=99:00:00
#PBS -l nodes=2:ppn=8:infiniband
#PBS -l pmem=900mb
#PBS -q submit
#
module load intel
module load openmpi
module load mcnpx
#
cd $PBS_O_WORKDIR
mpiexec mcnpx i=m24-0-0B o=m24-0-0Bo

Reference

MCNPX website: http://mcnpx.lanl.gov/